A Multilevel Converter With a Floating Bridge for  Open-End Winding Motor Drive

A Multilevel Converter With a Floating Bridge for Open-End Winding Motor Drive
Author(s):
B.Reshma , B.Sathyavani
Keywords:
Field-oriented control (FOC), floating bridge, open-end winding induction machine, space vector.
Abstract
In this paper, a circuit topology is analyzed, which is used as a three-level open-end winding IM drive. This topology uses dual inverters with only one dc voltage source at the primary side of the converter. The second bridge converter is connected to a floating capacitor bank. The aim of this topology is to eliminate the requirement for a bulky isolation transformer while achieving multilevel output voltage waveforms. The voltage across the floating capacitor bank is controlled using the redundant switching vectors along with a modified space vector modulation (SVM) scheme, which avoids unwanted voltage levels.
Article Details
Unique Paper ID: 144769 Publication Volume & Issue: Volume 4, Issue 3 Page(s): 121 - 127
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